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Transcription and Regulation

Transcription and Regulation
Transcription factors are

TATA boxes
CATT boxes
proteins which bind to DNA and regulate transcription
promoters

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Transcription and Regulation
Which of the following is necessary for transcription to occur?

Both DNA & RNA polymerase
DNA polymerase
RNA polymerase
DNA molecule

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Transcription and Regulation
Rho-dependent termination of transcription in E. coli

requires about 50 nucleotides of uncomplexed mRNA
removes mRNA and holoenzyme from the DNA
both (a) and (b)
requires ATP

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Transcription and Regulation
Each tRNA molecule has a cloverleaf secondary structure consisting of

either (a) or (b)
four stem loops
three stem loops
two stem loops

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Transcription and Regulation
The RNA polymerases that transcribe bacterial DNA are

highly glycosylated in their active forms
multisubunit enzymes
only active inside the cell
interchangable with DNA polymerases

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Transcription and Regulation
The nucleons of eukaryotic cell has

RNA polymerase I
all of these
RNA polymerase III
RNA polymerase II

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